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    • 6. 发明申请
    • Jack with Scale Including Protective Cover
    • 杰克与规模包括保护盖
    • US20100108967A1
    • 2010-05-06
    • US12529874
    • 2008-03-06
    • Kenichi Endo
    • Kenichi Endo
    • B66F3/25
    • B66F3/25F15B15/1457F15B15/18F15B15/28Y10T137/8275
    • A simple, inexpensive jack that can be used in severe working environments and can check an amount of raising and lowering movements of a piston of the jack at any time during working. The jack includes a cylinder, a piston capable of raising and lowering movements within the cylinder and a protective cover for covering at least a part of the outer circumference side surface of the cylinder, the protective cover having an inner circumference larger than the outer circumference of the cylinder and having one end fixed adjacent to the top end of the piston via a saddle and the other end being open, and a scale on the outer side surface of the cylinder. The amount of the raising and lowering movements of the piston is indicated by the relationship between the open end of the protective cover and the scale.
    • 一种简单,便宜的千斤顶,可用于恶劣的工作环境,并可以在工作期间随时检查千斤顶的活塞的升高和降低量。 千斤顶包括气缸,能够升高和降低气缸内的运动的活塞,以及用于覆盖气缸的外周侧表面的至少一部分的保护盖,保护罩的内圆周大于 气缸,其一端通过鞍座固定在活塞的顶端附近,另一端是打开的,并且在气缸的外侧表面上有刻度。 活塞的上升和下降运动的量由保护罩的开口端与秤之间的关系表示。